Onsrud 61-080 Single Edge Router Bit 1/4 in Solid Carbide

Product Description

The ONSRUD 61-080 is a single-edge, straight-flute router bit engineered for precision cutting in aluminum and natural wood. Built from solid carbide, it delivers the hardness and edge retention required for clean, accurate cuts in production and shop environments. The cutter diameter is 0.25 inches with a length of cut of 0.75 inches, a 0.25-inch shank diameter, and an overall length of 2.5 inches. Its square end geometry produces flat-bottomed grooves and profiles with minimal tearout. Licensed machinists, woodworkers, and CNC operators working with non-ferrous metals or wood stock are the primary users of this bit.

The 61-080 is suited for routing operations on aluminum stock and natural wood in both manual router table setups and CNC spindle applications. Its right-hand cut orientation and single-flute design allow efficient chip evacuation, which is especially beneficial when cutting softer materials like aluminum where chip buildup can cause heat and surface defects. This bit belongs to the ONSRUD 61-000 series, a line recognized in industrial routing applications for solid carbide construction and consistent dimensional tolerances.

Key Features

• Solid carbide construction for hardness and extended edge life
• Single-flute straight design promotes efficient chip clearance in aluminum and wood
• Square end geometry for flat-bottomed slots and profiling cuts
• Right-hand cutting direction compatible with standard router spindle rotation
• 0.25-inch shank diameter fits common collet sizes on routers and CNC spindles
• No pilot bearing - designed for free-hand or guided CNC routing operations

Compatibility

Designed for use on aluminum and natural wood; fits routers and CNC spindles accepting a 0.25-inch shank collet. Part of the ONSRUD 61-000 series.

Installation Notes

Installation should be performed by a qualified machinist, woodworker, or CNC technician. Always power down and isolate the router or spindle before inserting or removing the bit. Insert the shank fully into the collet to the minimum engagement depth recommended by the router manufacturer before tightening. Inspect the cutting edge for chips or wear before each use, as a damaged carbide edge can cause workpiece defects or bit failure.